Fact? :
max no of records per table = 2^31 - 1
max record size = 64kb (+ blobs)
max no of tables = 64k
max individual file size = 2gb/4gb ish depending

Rumour? :
"I've heard about a guy with a 900+ GB database"
"I know about one company here in Russia" = 300 simultaneous
connections.

Are there any other limits/maximums that any have heard of or know and
are the above correct/valid?

Yours,
Ian

p.s. the above came from seaching mers with combinations of max, limit,
spec etc. and i apologise for not quoting the sources directly ;-)